Lab

My prediction for the Lab is that When all of the items are mixed and then combined into the test tube the water will show particles of our saliva. I thought this because once the Lysol and alcohol were put in with the blue sports drink, the blue turned clear making everything in it visible. Through the experiment, I observed that the sports drink took up 8 mm in the test tube and then with the Lysol it move it up 2 mm. Also, the liquid began to lighten. Next when i was holding the tube and it was warm. I think it was warm because that is the temperature of the saliva. For the last step, when the alcohol was added, little white specks became visible on the sides of the tube. I believe that these specks are parts of spit. The results were that those white pieces were actually your DNA. I think that this result occurred because from putting the drink in your mouth and then putting back into the tube, some of your DNA that was in your spit went into it. Therefore when the other materials were placed in the tube they helped to show the DNA better.
The Reliability of this experiment depends on how much DNA is shown in the tube. So you may see DNA or just your saliva in the liquid. This means that the experiment can be reliable in some situations but not in others. An uncontrolled variable may have been time. After the experiment was complete, the tubes were suppose to sit for about 15 minutes. Due to shortened periods, i don't think it was left alone long enough. So if it did sit longer it may have showed more DNA. The experiment was controlled by the amount of liquids used. I learned form the lab that DNA is also in parts of your body like spit and that it is visible from the human eye if experimented correctly. Last, i can apply this knowledge to the real world by not only knowing a fun way to see DNA but learning that it can be extracted by the body. This can be done by doing something as simple as putting water or anything in your mouth and taking it out.